I think this is a great idea.if you like the user and add them that will give them the privilege to comment you.But if you don't add them you can't comment them.What I'm trying to say is that you can only receive comments from people you like.If you see a user cursing at everyone you don't add them.Then that way you don't have to put up with their cursing.
I bet that if you could do that, people like firetail wouldn't have to close their comments because of so many people acting like jerks for no apperent reason.
well when i leave i want to close my comments..but then again i dont because im not always on when a friend is so this MIGHT be a good idea..but hey,what if a newbie tries to ask you for help?what if someone triies to tell you something that isnt your friend?